首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   307篇
  免费   12篇
各国政治   19篇
工人农民   35篇
世界政治   21篇
外交国际关系   25篇
法律   158篇
中国政治   2篇
政治理论   57篇
综合类   2篇
  2022年   4篇
  2021年   7篇
  2020年   12篇
  2019年   8篇
  2018年   16篇
  2017年   18篇
  2016年   14篇
  2015年   8篇
  2014年   11篇
  2013年   48篇
  2012年   7篇
  2011年   14篇
  2010年   8篇
  2009年   7篇
  2008年   4篇
  2007年   8篇
  2006年   6篇
  2005年   5篇
  2004年   8篇
  2003年   8篇
  2002年   9篇
  2001年   5篇
  2000年   6篇
  1999年   5篇
  1998年   4篇
  1997年   7篇
  1996年   4篇
  1995年   3篇
  1994年   9篇
  1993年   4篇
  1992年   5篇
  1991年   4篇
  1990年   1篇
  1989年   1篇
  1988年   2篇
  1987年   6篇
  1986年   2篇
  1985年   2篇
  1984年   1篇
  1983年   5篇
  1982年   3篇
  1980年   1篇
  1978年   2篇
  1977年   1篇
  1975年   1篇
  1973年   3篇
  1967年   1篇
  1966年   1篇
排序方式: 共有319条查询结果,搜索用时 15 毫秒
41.
42.
This article describes the events associated with the National Assessment of Chapter 1, a study mandated by Congress in December 1983 in anticipation of its 1987 reauthorization of Chapter 1. The assessment occurred at the time the Reagan Administration was seriously challenging many of Congress's favorite educational programs, including Chapter 1. Despite their serious differences in views about Chapter 1, both Congress and the administration expected the assessment to serve their own needs and each group was worried that the other would have undue influence on the assessment. The article illustrates the politics associated with evaluation by describing the activities of the assessment, the responses of each of these two audiences, and the efforts of each side to control the assessment's agenda. It raises questions about whether an evaluation can really serve multiple audiences.  相似文献   
43.
This report highlights the importance of undertaking immunohistochemical staining of the brains of infants who die unexpectedly, as it may not only assist with the evaluation of the cause of death in an individual infant but may also help with the clinical management of subsequent siblings. A 5-month-old male infant who died suddenly was found to have diffuse beta-amyloid precursor protein (beta-APP) staining in the brain, with no unusual features in his history, death scene examination, routine autopsy dissection, and ancillary tests to suggest any definite cause of death. Due to the beta-APP staining, the possibility of previous episodes of occult trauma, apparent life threatening events (ALTEs), and accidental or inflicted suffocation was raised in the autopsy report. As detailed analyses and investigations provided no supportive evidence for trauma or inflicted injury, hypoxia was clinically considered the most likely cause. Because of these concerns, sleeping oxygen saturation levels were monitored following the birth of a subsequent sibling who had normal APGAR scores and no evidence of any health problems. Oxygen desaturation to 70% occurred in association with a color change while on the postnatal ward, and a subsequent polysomnogram showed multiple episodic significant desaturations to around 80% in association with central apnea. Other testing was unremarkable. These cases demonstrate that beta-APP staining of the brain may not only provide clues as to possible mechanisms of death in pediatric forensic cases but may indicate a need for careful clinical evaluation of subsequent siblings for possible central apnea requiring oxygen therapy.  相似文献   
44.
In February 2004, privacy concerns captured the public's attention when the United States government, the defendant in a lawsuit challenging the constitutionality of the Partial-Birth Abortion Ban Act of 2003, sought to subpoena the medical records of patients receiving intact dilation and extraction (also known as "partial birth") abortions in six different hospitals and six Planned Parenthood centers across the country. Three different federal court cases explored the enforceability of the subpoenas. This Note explores the rationales used by the three courts in examining the privacy interests involved. It then suggests some possible solutions for systematically protecting medical information: a legal solution; a technological solution; and a combination of both. The legal solution involves creating a federal physician-patient privilege, similar to that enforced in many states and parallel to the federal psychotherapist-patient privilege. The technological solution requires the complicity of multiple jurisdictions to verify the necessity of revealing medical information. Taken together, these solutions can assist the government in protecting its citizens by imposing more checks on itself.  相似文献   
45.
46.
47.
This column provides a country by country analysis of the latest legal developments, cases and issues relevant to the IT, media and telecommunications' industries in key jurisdictions across the Asia Pacific region. The articles appearing in this column are intended to serve as ‘alerts’ and are not submitted as detailed analyses of cases or legal developments.  相似文献   
48.
Analyzing the Influence of Micro-Level Factors on CCTV Camera Effect   总被引:1,自引:0,他引:1  

Objectives

Despite the popularity of closed circuit television (CCTV), evidence of its crime prevention capabilities is inconclusive. Research has largely reported CCTV effect as “mixed” without explaining this variance. The current study contributes to the literature by testing the influence of several micro-level factors on changes in crime levels within CCTV areas of Newark, NJ.

Methods

Viewsheds, denoting the line-of-sight of CCTV cameras, were units of analysis (N = 117). Location quotients, controlling for viewshed size and control-area crime incidence, measured changes in the levels of six crime categories, from the pre-installation period to the post-installation period. Ordinary least squares regression models tested the influence of specific micro-level factors—environmental features, camera line-of-sight, enforcement activity, and camera design—on each crime category.

Results

First, the influence of environmental features differed across crime categories, with specific environs being related to the reduction of certain crimes and the increase of others. Second, CCTV-generated enforcement was related to the reduction of overall crime, violent crime and theft-from-auto. Third, obstructions to CCTV line-of-sight caused by immovable objects were related to increased levels of auto theft and decreased levels of violent crime, theft from auto and robbery.

Conclusions

The findings suggest that CCTV operations should be designed in a manner that heightens their deterrent effect. Specifically, police should account for the presence of crime generators/attractors and ground-level obstructions when selecting camera sites, and design the operational strategy in a manner that generates maximum levels of enforcement.  相似文献   
49.
50.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号